diff options
Diffstat (limited to 'doc/man3/EC_POINT_new.pod')
-rw-r--r-- | doc/man3/EC_POINT_new.pod | 73 |
1 files changed, 46 insertions, 27 deletions
diff --git a/doc/man3/EC_POINT_new.pod b/doc/man3/EC_POINT_new.pod index f941446fd5..d2fe650a89 100644 --- a/doc/man3/EC_POINT_new.pod +++ b/doc/man3/EC_POINT_new.pod @@ -40,14 +40,6 @@ EC_POINT_hex2point EC_POINT *EC_POINT_dup(const EC_POINT *src, const EC_GROUP *group); const EC_METHOD *EC_POINT_method_of(const EC_POINT *point); int EC_POINT_set_to_infinity(const EC_GROUP *group, EC_POINT *point); - int EC_POINT_set_Jprojective_coordinates_GFp(const EC_GROUP *group, - EC_POINT *p, - const BIGNUM *x, const BIGNUM *y, - const BIGNUM *z, BN_CTX *ctx); - int EC_POINT_get_Jprojective_coordinates_GFp(const EC_GROUP *group, - const EC_POINT *p, - BIGNUM *x, BIGNUM *y, BIGNUM *z, - BN_CTX *ctx); int EC_POINT_set_affine_coordinates(const EC_GROUP *group, EC_POINT *p, const BIGNUM *x, const BIGNUM *y, BN_CTX *ctx); @@ -56,6 +48,34 @@ EC_POINT_hex2point int EC_POINT_set_compressed_coordinates(const EC_GROUP *group, EC_POINT *p, const BIGNUM *x, int y_bit, BN_CTX *ctx); + size_t EC_POINT_point2oct(const EC_GROUP *group, const EC_POINT *p, + point_conversion_form_t form, + unsigned char *buf, size_t len, BN_CTX *ctx); + size_t EC_POINT_point2buf(const EC_GROUP *group, const EC_POINT *point, + point_conversion_form_t form, + unsigned char **pbuf, BN_CTX *ctx); + int EC_POINT_oct2point(const EC_GROUP *group, EC_POINT *p, + const unsigned char *buf, size_t len, BN_CTX *ctx); + BIGNUM *EC_POINT_point2bn(const EC_GROUP *group, const EC_POINT *p, + point_conversion_form_t form, BIGNUM *bn, + BN_CTX *ctx); + EC_POINT *EC_POINT_bn2point(const EC_GROUP *group, const BIGNUM *bn, + EC_POINT *p, BN_CTX *ctx); + char *EC_POINT_point2hex(const EC_GROUP *group, const EC_POINT *p, + point_conversion_form_t form, BN_CTX *ctx); + EC_POINT *EC_POINT_hex2point(const EC_GROUP *group, const char *hex, + EC_POINT *p, BN_CTX *ctx); + +Deprecated since OpenSSL 3.0: + + int EC_POINT_set_Jprojective_coordinates_GFp(const EC_GROUP *group, + EC_POINT *p, + const BIGNUM *x, const BIGNUM *y, + const BIGNUM *z, BN_CTX *ctx); + int EC_POINT_get_Jprojective_coordinates_GFp(const EC_GROUP *group, + const EC_POINT *p, + BIGNUM *x, BIGNUM *y, BIGNUM *z, + BN_CTX *ctx); int EC_POINT_set_affine_coordinates_GFp(const EC_GROUP *group, EC_POINT *p, const BIGNUM *x, const BIGNUM *y, BN_CTX *ctx); @@ -76,24 +96,6 @@ EC_POINT_hex2point EC_POINT *p, const BIGNUM *x, int y_bit, BN_CTX *ctx); - size_t EC_POINT_point2oct(const EC_GROUP *group, const EC_POINT *p, - point_conversion_form_t form, - unsigned char *buf, size_t len, BN_CTX *ctx); - size_t EC_POINT_point2buf(const EC_GROUP *group, const EC_POINT *point, - point_conversion_form_t form, - unsigned char **pbuf, BN_CTX *ctx); - int EC_POINT_oct2point(const EC_GROUP *group, EC_POINT *p, - const unsigned char *buf, size_t len, BN_CTX *ctx); - BIGNUM *EC_POINT_point2bn(const EC_GROUP *group, const EC_POINT *p, - point_conversion_form_t form, BIGNUM *bn, - BN_CTX *ctx); - EC_POINT *EC_POINT_bn2point(const EC_GROUP *group, const BIGNUM *bn, - EC_POINT *p, BN_CTX *ctx); - char *EC_POINT_point2hex(const EC_GROUP *group, const EC_POINT *p, - point_conversion_form_t form, BN_CTX *ctx); - EC_POINT *EC_POINT_hex2point(const EC_GROUP *group, const char *hex, - EC_POINT *p, BN_CTX *ctx); - =head1 DESCRIPTION @@ -142,9 +144,13 @@ operations. A mapping exists between Jacobian projective co-ordinates and affine co-ordinates. A Jacobian projective co-ordinate (x, y, z) can be written as an affine co-ordinate as (x/(z^2), y/(z^3)). Conversion to Jacobian projective from affine co-ordinates is simple. The co-ordinate (x, y) is mapped -to (x, y, 1). To set or get the projective co-ordinates use +to (x, y, 1). Although deprecated in OpenSSL 3.0 and should no longer be used, +to set or get the projective co-ordinates in older versions use EC_POINT_set_Jprojective_coordinates_GFp() and EC_POINT_get_Jprojective_coordinates_GFp() respectively. +Modern versions should instead use EC_POINT_set_affine_coordinates() and +EC_POINT_get_affine_coordinates(), performing the conversion manually using the +above maps in such rare circumstances. Points can also be described in terms of their compressed co-ordinates. For a point (x, y), for any given value for x such that the point is on the curve @@ -241,6 +247,19 @@ L<crypto(7)>, L<EC_GROUP_new(3)>, L<EC_GROUP_copy(3)>, L<EC_POINT_add(3)>, L<EC_KEY_new(3)>, L<EC_GFp_simple_method(3)>, L<d2i_ECPKParameters(3)> +=head1 HISTORY + +EC_POINT_set_Jprojective_coordinates_GFp(), +EC_POINT_get_Jprojective_coordinates_GFp(), +EC_POINT_set_affine_coordinates_GFp(), EC_POINT_get_affine_coordinates_GFp(), +EC_POINT_set_compressed_coordinates_GFp(), +EC_POINT_set_affine_coordinates_GF2m(), EC_POINT_get_affine_coordinates_GF2m(), +EC_POINT_set_compressed_coordinates_GF2m() were deprecated in OpenSSL 3.0. + +B<EC_POINT_set_affine_coordinates>, B<EC_POINT_get_affine_coordinates>, +and B<EC_POINT_set_compressed_coordinates> were +added in OpenSSL 1.1.1. + =head1 COPYRIGHT Copyright 2013-2018 The OpenSSL Project Authors. All Rights Reserved. |